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DIY AC power meter using PIC18F252

Posted on February 7, 2015 by R-B Leave a comment

Electro-Labs new tutorial project is a PIC microcontroller-based digital power meter that will let you measure the power consumption of an electrical appliance connected to the 230V/50Hz mains line. The project implements a resistor-divider network to scale down the mains voltage and then uses MCP3202 ADC chip to convert the scaled AC voltage to digital counts. For current measurement, the ACS712-30A hall-effect sensor is used in conjunction with another MCP3202 chip. The digital outputs from the ADC chips are then read by the PIC18F252 microcontroller for computing the power. The measured AC RMS voltage, current, and Watts are then displayed on the dot

Microsoft brings free Windows 10 for Raspberry Pi 2

Posted on February 4, 2015 by R-B One comment

Microsoft has announced that it will give away a free version of Windows 10 that supports Raspberry Pi 2. We’re excited to announce that we are expanding our Windows Developer Program for IoT by delivering a version of Windows 10 that supports Raspberry Pi 2. This release of Windows 10 will be free for the Maker community through the Windows Developer Program for IoT. Windows 10 is the first step to an era of more personal computing. This vision framed our work on Windows 10, where we are moving Windows to a world that is more mobile, natural and grounded

Give your multimeter a remote display

Posted on February 3, 2015 by R-B One comment

Ken Kaarvik multimeter remote display project describes how to add a remote wireless display to specific digital multimeters (such as Fluke 17B) with a serial output using nRF24L01+ rf link. The transmitter and receiver units both uses Arduino (Trinket board). The receiving side also uses a 128×64 OLED to display the remote measurements.

Meet Teensy LC (low cost)

Posted on February 3, 2015 by R-B Leave a comment

Meet the new Teensy LC, a more affordable version of popular Teensy ARM development board and is now available for pre-order for only $$11.65. It features an ARM Cortex-M0+ processor at 48 MHz, 62K Flash, 8K RAM, 12 bit analog input & output, hardware Serial, SPI & I2C, USB, and a total of 27 I/O pins. And most importantly, Teensy-LC maintains the same form-factor as Teensy 3.1, with most pins offering similar peripheral features. Most modern projects involve serial communication with sensors, other chips, other systems, or even the internet. Hardware serial ports greatly simplify projects and enable excellent performance. Teensy-LC provide

Microchip’s new Gesture controller IC

Posted on February 3, 2015 by R-B Leave a comment

Microchip Technology has announced the second member of its award-winning and patented GestIC® family. The new MGC3030 3D gesture controller features simplifies user-interface options focused on gesture detection, enabling true one-step design-in of 3D gesture recognition in consumer and embedded devices. Housed in an easy-to-manufacture SSOP28 package, the MGC3030 expands the use of highly sought after 3D gesture control features to high-volume cost-sensitive applications such as toys, audio and lighting. The simplicity of gesture-detection integration offered by the MGC3030 is also achieved through Microchip’s free, downloadable AUREA graphical user interface (GUI) and easily configurable general purpose IO ports that even allow for host MCU/processor-free usage. The

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